Added the Claude family of models to ModelFamily

[rohanthacker]

Why are these changes needed?

Added the Claude family of models to the ModelFamily class.

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.11%. Comparing base (9f1c4c9) to head (23f4bef).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5443      +/-   ##
==========================================
+ Coverage   76.49%   78.11%   +1.61%     
==========================================
  Files         192      158      -34     
  Lines       10617     9590    -1027     
  Branches      138        0     -138     
==========================================
- Hits         8122     7491     -631     
+ Misses       2401     2099     -302     
+ Partials       94        0      -94     

Flag	Coverage Δ
unittests	78.11% <100.00%> (+1.61%)	⬆️

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